Great Blue Heron Populations Hamilton
Saturday October 16 2010
Great Blue Heron populations appear to be stable across the United States and Canada. The bird’s primary needs are wetland habitat for hunting and rookery space for breeding, and as a result their populations are susceptible to loss of these habitats. If you are fortunate enough to discover a colony of Great Blue Herons, it is best to observe the birds from a distance. They are sensitive to any kind of rookery disturbance, including noise and nearby human activity, and may abandon nest sites if disturbed.
Summer Range: Great Blue Herons breed across most of North America south of southern Canada to the Gulf states, Central America and the Caribbean.
Winter Range: Great Blue Herons migrate singly or in small flocks, mainly in daytime. They spend winters from southern Canada southward to northern South America, and along the continental ocean coasts as far north as temperate areas of Alaska and Nova Scotia. It is rare, though not unheard of, for an occasional Great Blue Heron to successfully survive a winter in the north if it can find open water.
DOUG WORRALL PHOTOGRAPHER